# React Native Module

# Latest Release

Version 1.17.0 (Changelog)

# Installation

yarn add @sumsub/react-native-mobilesdk-module

# Android

Add the following repository to your android/build.gradle file:

allprojects {
  repositories {
      // ...
      maven { url  "https://maven.sumsub.com/repository/maven-public/" }
      // ...

# iOS

  1. Add as follows at the top of ios/Podfile:
source 'https://cdn.cocoapods.org/'
source 'https://github.com/SumSubstance/Specs.git'

Then run:

npx pod-install

If it fails with CocoaPods could not find compatible versions for pod "IdensicMobileSDK" message then do as follows:

cd ios && pod update IdensicMobileSDK && cd ..
  1. Update Info.plist to have description for the camera, microphone and the photo library usage
plutil -insert "NSCameraUsageDescription" -string "Let us take a photo" ios/${PWD##*/}/Info.plist
plutil -insert "NSMicrophoneUsageDescription" -string "Time to record a video" ios/${PWD##*/}/Info.plist
plutil -insert "NSPhotoLibraryUsageDescription" -string "Let us pick a photo" ios/${PWD##*/}/Info.plist

# Usage

Before launching make sure you did the Backend routines

# Setup

import SNSMobileSDK from '@sumsub/react-native-mobilesdk-module';

// ...

let launchSNSMobileSDK = () => {

    let apiUrl = "https://test-api.sumsub.com" // or https://api.sumsub.com
    let flowName = "msdk-basic-kyc" // or set up your own with the dashboard
    let accessToken = "your_access_token" // generate one on the backend

    let snsMobileSDK = SNSMobileSDK.Builder(apiUrl, flowName)
            .withAccessToken(accessToken, () => {
              // this is a token expiration handler, will be called if the provided token is invalid or got expired
              // call your backend to fetch a new access token (this is just an example)
              return fetch('http://example.org/', {
                method: 'GET',
              }).then(resp => {
                // return a fresh token from here
                return 'new_access_token'
            .withHandlers({ // Optional callbacks you can use to get notified of the corresponding events
              onStatusChanged: (event) => {
                console.log("onStatusChanged: [" + event.prevStatus + "] => [" + event.newStatus + "]");
              onLog: (event) => {
                console.log("onLog: [Idensic] " + event.message);
            .withSupportEmail('[email protected]')
            .withLocale('en') // Optional, for cases when you need to override system locale

    snsMobileSDK.launch().then(result => {
      console.log("SumSub SDK State: " + JSON.stringify(result))
    }).catch(err => {
      console.log("SumSub SDK Error: " + JSON.stringify(err))

The snsMobileSDK.launch() returns a Promise that will be resolved with a Result object. Use it to determine the SDK status upon its closure.

Here is an example of the result:

  "success": false,
  "status": "Failed",
  "errorType": "Unauthorized",
  "errorMsg": "Unauthorized access with accessToken=[your access token]"

Please find a detailed description below.

# Launch

Next, you are able to use the launchSNSMobileSDK(), as defined above, in order to launch the SDK.

For example:

    title="Launch SumSub SDK"

# Dismission

Normally the user closes the sdk himself, but if you need to do it programmatically, here is the helper:


# Advanced

# Events

Various events happening along the processing could be delivered into an optional onEvent handler:

  onEvent: (event) => {
    console.log("onEvent: " + JSON.stringify(event));

Each Event has eventType and some parameters packed into payload hash, for example:

  "eventType": "StepInitiated",
  "payload": {
    "idDocSetType": "IDENTITY"

# Possible events:

eventType payload Description
"idDocSetType": "$idDocSetType"
Step $idDocSetType has been initiated
"idDocSetType": "$idDocSetType",
"isCancelled": false|true
Step $idDocSetType has been fulfilled or cancelled

# Applicant Actions

There is a special way to use the SDK in order to perform Applicant actions.

Only the Face authentication action is supported at the moment

In order to use the SDK in applicant action mode, you need to have:

  1. A flow of Applicant actions type.
  2. An Access Token created with both userId and externalActionId parameters.

When an action is completed the status will be set to ActionCompleted and the result structure would contain the actionResult field that describes the outcome of the last action's invocation:

  "success": true,
  "status": "ActionCompleted",
  "actionResult": {
    "actionId": "5f77648daee05c419400c572",
    "answer": "GREEN"

An empty value of actionResult.answer means that the action was cancelled.

# Action Result Handler

In addition, there is an optional onActionResult handler, that allows you to handle the action's result upon it's arrival from the backend. The user sees the "Processing..." screen at this moment.

  onActionResult: (result) => {
    console.log("onActionResult: " + JSON.stringify(result));

    // you must return a `Promise` that in turn should be resolved with 
    // either `cancel` to force the user interface to close, or `continue` to proceed as usual
    return new Promise(resolve => {

# API Reference

# Result

An object described the outcome of the last sdk launch:

Field Type Description
success Boolean The boolean value indicates if there was an error on the moment the sdk is closed. Use errorType and errorMsg to see the reasons of the error if any
status String SDK status
errorType String A formal reason of the error if any
errorMsg String A verbose error description if any
actionResult Object Describes the result of the last applicant action's invocation if any

While successand status are always present, the rest fields are optional.

# Status

Here is the possible sdk statuses:

Case Description
Ready SDK is initialized and ready to be presented
Failed SDK fails for some reasons (see errorType and errorMsg for details)
Initial No verification steps are passed yet
Incomplete Some but not all of the verification steps have been passed over
Pending Verification is pending
TemporarilyDeclined Applicant has been declined temporarily
FinallyRejected Applicant has been finally rejected
Approved Applicant has been approved
ActionCompleted Applicant action has been completed

# Error Type

Here is the possible error types:

Case Description
Unknown Unknown or no fail
InvalidParameters An attempt to setup with invalid parameters
Unauthorized Unauthorized access detected (most likely accessToken is invalid or expired and had failed to be refreshed)
InitialLoadingFailed Initial loading from backend is failed
ApplicantNotFound No applicant is found for the given parameters
ApplicantMisconfigured Applicant is found, but is misconfigured (most likely lacks of idDocs)
InititlizationError An initialization error occured
NetworkError A network error occured (the user will be presented with Network Oops screen)
UnexpectedError Some unexpected error occured (the user will be presented with Fatal Oops screen)

# Event

An object that represents an event happening along the processing:

Field Type Description
eventType String Event type
payload Object Event payload

# Action Result

An object that represents the applicant action's result:

Field Type Description
actionId String Applicant action identifier to check the results against the server
answer String Overall result. Typical values are GREEN, RED or ERROR
Last Updated: 4/9/2021, 2:27:27 PM